Manusmriti

siva.sh/manusmriti/11/219

चतुरः प्रातरश्नीयात् पिण्डान् विप्रः समाहितः । चतुरोऽस्तमिते सूर्ये शिशुचान्द्रायणं स्मृतम् ॥ २१९ ॥

sanskrit

If a Brahmana, with concentrated mind, eats (during a month daily) four mouthfuls in a morning and four after sunset, (that is) called the lunar penance of children.

english translation

caturaH prAtaraznIyAt piNDAn vipraH samAhitaH | caturo'stamite sUrye zizucAndrAyaNaM smRtam || 219 ||

hk transliteration by Sanscript